CN115382234A - Chlorination low pressure rectification discharge system - Google Patents
Chlorination low pressure rectification discharge system Download PDFInfo
- Publication number
- CN115382234A CN115382234A CN202210836122.9A CN202210836122A CN115382234A CN 115382234 A CN115382234 A CN 115382234A CN 202210836122 A CN202210836122 A CN 202210836122A CN 115382234 A CN115382234 A CN 115382234A
- Authority
- CN
- China
- Prior art keywords
- discharge
- pipeline
- low pressure
- rectification
- chlorohydrination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005660 chlorination reaction Methods 0.000 title description 2
- 238000010926 purge Methods 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 239000002699 waste material Substances 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 3
- 239000007788 liquid Substances 0.000 claims 2
- 239000013049 sediment Substances 0.000 claims 2
- 229910001510 metal chloride Inorganic materials 0.000 abstract description 9
- 239000002893 slag Substances 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 6
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000007038 hydrochlorination reaction Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000005046 Chlorosilane Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention discloses a chlorohydrination low-pressure rectification discharge system which comprises a rectification device, a slag slurry treatment device and a purging device, wherein the slag slurry treatment device is connected with the rectification device through a discharge pipeline so as to be capable of receiving waste materials discharged by the rectification device, and the purging device is connected with the discharge pipeline through a ventilation pipeline so as to be capable of purging an inner cavity of the discharge pipeline. The invention solves the problem that metal chloride is easy to deposit on the inner wall of the discharge pipeline.
Description
Technical Field
The invention relates to the technical field of hydrochlorination, in particular to a hydrochlorination low-pressure rectification discharge system.
Background
In the low-pressure rectification part of the chlorohydrination, the metal chloride enriched in the rectifying tower kettle is required to be discharged out of the rectifying tower periodically through a discharge port and a pipeline arranged in the tower kettle so as to reduce the content of the metal chloride in the chlorosilane. However, in the actual operation process, it is found that, because the metal chloride is relatively viscous, the metal chloride in the discharge pipeline of the rectifying tower kettle is easy to deposit at the discharge outlet of the rectifying tower kettle or to be accumulated on the inner wall of the discharge pipeline along with the reduction of the temperature, thereby causing pipeline blockage.
Disclosure of Invention
In view of the defects in the prior art, the invention provides a chlorohydrination low-pressure rectification discharge system, which comprises a rectification device, a slag slurry treatment device and a purging device, wherein the slag slurry treatment device is connected with the rectification device through a discharge pipeline so as to be capable of receiving waste materials discharged by the rectification device, and the purging device is connected with the discharge pipeline through a ventilation pipeline so as to be capable of purging an inner cavity of the discharge pipeline.
Preferably, the rectification device is connected with the discharge pipeline in an openable and closable mode through a first block valve, the slag slurry treatment device is connected with the discharge pipeline in an openable and closable mode through a check valve, and the blowing device is connected with the ventilation pipeline in an openable and closable mode through a second block valve.
Preferably, the rectification device comprises a rectification tower and a reboiling tower which are connected with each other, a downcomer is connected between the bottom wall of the rectification tower and the bottom wall of the reboiling tower, and the downcomer is in openable and closable connection with the discharge pipeline through the first isolating valve.
Preferably, on one side of the discharge conduit between the first block valve and the connection of the discharge conduit and the vent conduit, a flow meter and a regulating valve are provided, the flow meter being capable of regulating the regulating valve in dependence on the measured flow value.
Preferably, a third block valve is provided on a side of the discharge pipe between the flow meter and the regulating valve.
Preferably, a fourth block valve is provided on a side of the discharge pipe between the check valve and a junction of the discharge pipe and the vent pipe.
Preferably, the gas for purging by the purging device is nitrogen.
Compared with the prior art, the chlorohydrination low-pressure rectification discharge system is provided with the purging device capable of purging the inner cavity of the discharge pipeline, so that the metal chloride can be prevented from being deposited on the inner wall of the discharge pipeline.
Drawings
FIG. 1 is a schematic structural diagram of a chlorohydrination low-pressure rectification discharge system in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the invention shown in the drawings and described in accordance with the drawings are exemplary only, and the invention is not limited to these embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.
In response to the problems of the prior art described in the background section, the present example provides a chlorohydrination low pressure rectification discharge system. As shown in FIG. 1, the discharging system of the low-pressure rectification in the chlorine hydrogenation of the embodiment comprises a rectification device 1, a slurry treatment device 2 and a purging device 3. The slag slurry treatment device 2 is connected with the rectifying device 1 through a discharge pipeline 4 so as to be capable of receiving waste materials discharged by the rectifying device 1, and the purging device 3 is connected with the discharge pipeline 4 through a vent pipeline 5 so as to be capable of providing nitrogen gas flow for the discharge pipeline 4 and purging an inner cavity of the discharge pipeline 4. Specifically, the rectifying device 1 is connected with the discharge pipeline 4 in an openable and closable manner through a first block valve 11, the slurry treatment device 2 is connected with the discharge pipeline 4 in an openable and closable manner through a check valve 21, and the purging device 3 is connected with the vent pipeline 5 in an openable and closable manner through a second block valve 31.
In the discharging system of the low pressure distillation of chlorohydrination in this example, after discharging the metal chloride, the second block valve 31 is opened to provide a nitrogen gas flow to the discharging pipeline 4 through the purging device 3, so as to purge the inner wall of the discharging pipeline 4.
Preferably, the rectifying apparatus 1 of the present embodiment includes a rectifying column 1a and a reboiling column 1b connected to each other for better discharging metal chlorides. A down-flow pipeline 1c is connected between the bottom wall of the rectifying tower 1a and the bottom wall of the reboiling tower 1b, and the down-flow pipeline 1c is connected with the discharge pipeline 4 in an openable and closable manner through the first isolating valve 11.
Preferably, in order to perform targeted purging on the discharge pipeline 4, in this embodiment, valves are disposed at different positions of the discharge pipeline 4. Specifically, on a side of the discharge pipe 4 between the first block valve 11 and a connection of the discharge pipe 4 and the vent pipe 5, a flow meter 41 and a regulating valve 42 are provided, the flow meter 41 being capable of regulating the regulating valve 42 according to a measured flow value. A third block valve 43 is provided on a side of the discharge pipe 4 between the flow meter 41 and the regulating valve 42. A fourth block valve 44 is provided on one side of the discharge pipe 4 between the check valve 21 and the junction of the discharge pipe 4 and the vent pipe 5. The gas flow provided by the purging device 3 flows to a specific area of the discharge pipeline 4 by opening and closing the valve, so that the discharge pipeline 4 is purged specifically.
In the low pressure rectification discharge system for chlorohydrination of the embodiment, a purging device capable of purging the inner cavity of the discharge pipeline is arranged, so that the effect of preventing the metal chloride from being deposited on the inner wall of the discharge pipeline is realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a chlorohydrination low pressure rectification discharge system which characterized in that, includes rectifier unit, sediment thick liquid processing apparatus and sweeps the device, sediment thick liquid processing apparatus through arrange the material pipeline with rectifier unit connects in order can receive rectifier unit exhaust waste material, sweep the device through the breather line with arrange the material pipe connection, in order can sweep the inner chamber of row material pipeline.
2. A chlorohydrination low pressure rectification discharge system as claimed in claim 1, wherein said rectification device is in openable and closable connection with said discharge pipeline through a first block valve, said slurry treatment device is in openable and closable connection with said discharge pipeline through a check valve, and said purge device is in openable and closable connection with said vent pipeline through a second block valve.
3. The chlorohydrination low pressure rectification discharge system of claim 2, wherein the rectification device comprises a rectification column and a reboiling column connected with each other, a downcomer is connected between the bottom wall of the rectification column and the bottom wall of the reboiling column, and the downcomer is in openable and closable connection with the discharge pipeline through the first block valve.
4. A chlorohydrination low pressure rectification discharge system according to claim 3, characterised in that on the side of the discharge line between the first block valve and the connection of the discharge line with the vent line, a flow meter and a regulating valve are provided, the flow meter being able to regulate the regulating valve depending on the measured flow value.
5. The chlorohydrination low pressure rectification discharge system of claim 4, wherein a third block valve is disposed on one side of the discharge line between the flow meter and the regulating valve.
6. A chlorohydrination low pressure rectification discharge system as claimed in claim 5, wherein a fourth block valve is provided on a side of the discharge line between the check valve and the junction of the discharge line and the vent line.
7. The chlorohydrination low pressure rectification discharge system of any one of claims 1 to 6, wherein the gas used for purging by the purging device is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210836122.9A CN115382234A (en) | 2022-07-15 | 2022-07-15 | Chlorination low pressure rectification discharge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210836122.9A CN115382234A (en) | 2022-07-15 | 2022-07-15 | Chlorination low pressure rectification discharge system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115382234A true CN115382234A (en) | 2022-11-25 |
Family
ID=84116433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210836122.9A Pending CN115382234A (en) | 2022-07-15 | 2022-07-15 | Chlorination low pressure rectification discharge system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115382234A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001293450A (en) * | 2000-04-12 | 2001-10-23 | Tsukishima Kikai Co Ltd | Method and device for treating waste |
| CN105776224A (en) * | 2016-03-17 | 2016-07-20 | 亚洲硅业（青海）有限公司 | Method for washing rectifying column reboiler |
| CN106554018A (en) * | 2015-09-28 | 2017-04-05 | 新特能源股份有限公司 | A kind of cold hydrogenation dust pelletizing system and technique |
| CN108721933A (en) * | 2018-08-16 | 2018-11-02 | 青海黄河上游水电开发有限责任公司新能源分公司 | Cold hydrogenation low-pressure distillation processing unit, cold hydrogenation low-pressure distillation processing system and anti-blockage method |
| CN110314400A (en) * | 2019-07-30 | 2019-10-11 | 合盛硅业（泸州）有限公司 | A kind of screenings tapping equipment and its discharge method for organosilicon production |
| CN211328183U (en) * | 2019-09-17 | 2020-08-25 | 河南硅烷科技发展股份有限公司 | Slag-discharging anti-blocking device of reboiler of cold hydrogenation system |
| CN111981319A (en) * | 2020-07-10 | 2020-11-24 | 珠海醋酸纤维有限公司 | Titanium dioxide suspension conveying system |
| CN212491625U (en) * | 2020-05-25 | 2021-02-09 | 福建钰融科技有限公司 | Nitrogen purging device |
-
2022
- 2022-07-15 CN CN202210836122.9A patent/CN115382234A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001293450A (en) * | 2000-04-12 | 2001-10-23 | Tsukishima Kikai Co Ltd | Method and device for treating waste |
| CN106554018A (en) * | 2015-09-28 | 2017-04-05 | 新特能源股份有限公司 | A kind of cold hydrogenation dust pelletizing system and technique |
| CN105776224A (en) * | 2016-03-17 | 2016-07-20 | 亚洲硅业（青海）有限公司 | Method for washing rectifying column reboiler |
| CN108721933A (en) * | 2018-08-16 | 2018-11-02 | 青海黄河上游水电开发有限责任公司新能源分公司 | Cold hydrogenation low-pressure distillation processing unit, cold hydrogenation low-pressure distillation processing system and anti-blockage method |
| CN110314400A (en) * | 2019-07-30 | 2019-10-11 | 合盛硅业（泸州）有限公司 | A kind of screenings tapping equipment and its discharge method for organosilicon production |
| CN211328183U (en) * | 2019-09-17 | 2020-08-25 | 河南硅烷科技发展股份有限公司 | Slag-discharging anti-blocking device of reboiler of cold hydrogenation system |
| CN212491625U (en) * | 2020-05-25 | 2021-02-09 | 福建钰融科技有限公司 | Nitrogen purging device |
| CN111981319A (en) * | 2020-07-10 | 2020-11-24 | 珠海醋酸纤维有限公司 | Titanium dioxide suspension conveying system |
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